Fluid-conductive hose



March 14, 1933. J, PoBERr-:JSKY

FLUID CONDUCTIVE HOSE med 0011. 11, 1930 Patented Mar. 14, y1933 UNITED vSTATES PATENT oFFlca .ucouns ronnnmsxr, or ners-communs, ramon, assronon 'ro sornarnnxrry A conroaA'rIo'Ny or FRANCE Y rLum-ooivnrrc'rrvn nosa Application M October 11, 1930, Serial No. 488,097, and in Germany Iaroh 90, 1830.

Such piping `as was installed up -to the present in motor cars and airplanes was of rigid character andA consisted of metal tubv ing.A Pipes ofthis charactersuifer from considerable drawbacks, the chief of which resides in that they will vnot resist the vibrations of the a paratus, which results in oil or gasoline lea that may cause re.

To do away with such inconvenience,

, have devised a systemwhich comprizes a flexible hose provided vat both ends thereof with a nipple which can be fitted to the various appliances of' the machine (airplane, motor car or the like) such as the carburetonthe tank, the pump, etc.

` pended drawing, the hose according to this ,'gr

invention is made up primarily of a coiled `w1re 1 of steel, iron, brass, aluminum or .like metal. Wound directly upon the saidA coil is a, cellulose film 2 the various layers of which are assembledb 'an adhesive material, whereby oneV single ayer is made from 3o they several laminations.. The said film is not tightly applied upon the coil; instead,

sulicient material must be provided between the turns to ensure thatthe material will yield and be expanded by a certain amount as the coil is extended.

The said cellulose lm is secured in posi# Vtion by means ofU a cover 3 consistin cfa cotton, linen, hemp or if necessary si covering by which it is protected against external blows.

An additional 4layer 4 similar to layer 3 may also be interposed as a further safeguard between the coil 1 and the cellulose ayer 2' in order to avoid direct contact of the same with the medium flowing vthrough the hose. i

ThisV inner-sheath maybe of different character dependin on the medium; thus, for instance, some kind ofoil-cloth or standoil-treated fabric will preferably be chosen where oils are to be dealt with,

In order to obtain a perfect pipin a layer 5 of elastic and flexible material w lch is compressible and soft is thereafter' arraxged uponthe layer 3.

onsidering that safety against re is of paramount importance in airplanes, the hose is covered with a fire-proof layer; 6 of asbestes-fabric or braid by which the piping will be made impervious to iiames arising from any portion of the airplane or automobile equipped with such piping,

The external sheath 7 may consist either in a metal braid of copper brass, steel or the like, or in a braid ,o cotton, 'hemp linen, silk or the like, or in a covering of moleskinor lincrusta-like fabric.

The flexible pipe thus *produced is provided at both ends thereof with a metal nipple 8 of copper, brass, cast iron, aluminum or the like having a conical oove cut therein to be engaged by the inner coil mentioned above, the nipple being suitably retained in position.by an outer ring 9 of any suitable metal.

In this manner, the above described materials are squeezed between the nipple and the ring whlch cannot shift once it is set and will allow a perfect fitting of the hose u on any and all the appliances of themaine.

I claim v 1. A hose for iniammable uids especially adapted for conveying infiammable steel fiuids to internal combustion engines subject to vibrations, comprising a helical wire coil, al cellulose la er thereon, said cellulose layer being forme of cellulose film Wound about the coil and cemented together by means.

of adhesivevmaterial, a fabric covering surn rounding the cellulose layer, a sheath 'of soft yielding material encasinfr the fabric, a layer of asbestos encasin'g t e sheath of soft .yielding material, and a protective metallic braid covering the asbestos.

2. A hose for inflammable fiuids especially adapted for conveying inflammable fluids to internal combustion engines subject L, to vibrations, comprising a helical wire coil,

ion

' ej.' fabric covering on said wire coil, s, cellulose 1a eronA the fabric covern, said ce1- lulose a er being formed of ce ulose lm wound a 'ut the coil and cemented together A5 by means of adhesive material a, fabric cvov- 'ering surrounding the celluiose layer, a.

. sheath of soft yielding materialleneasing v the fabric, a. layer of asbestos encasing the sbeetb of soft yielding materinLfanda protective `n ieizallic "braid covering the asbestos.

In testimony whereof I ax si ture.

JACQUES POB KY. 

